Using these Fischer Duopower 6x30 Wall Plugs is easy. First, drill a hole in the wall according to the size of the plug. Then, insert the plug into the hole. Thanks to its narrow edge, it won't fall too deep. After that, insert your screw or bolt into the plug. You'll feel when the anchor is properly set. When using these plugs, make sure the drill hole is clean to ensure a good fit. Also, choose the right building material for which the plug is designed. For maintenance, there's not much you need to do. Just check periodically to make sure the plug is still secure and replace it if it shows any signs of damage.